화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of the Korean Industrial and Engineering Chemistry, Vol.17, No.1, 73-81, February, 2006
Export Citation
폐유리의 가수분해 반응에 의한 발포유리의 제조(III) - 안정화 열처리공정 및 Scale-up Test -
Preduction of Foamed Glass by Using Hydrolysis of Waste Glass(III) - Heat Treatment for Stabilization and Scale-up Test -
이철태†, 엄의흠
  • 단국대학교 공학부 화학공학전공
Chul-Tae Lee†, and Eui-Heum Um
  • Department of Chemical Engineering, Dankook University, Seoul 140-714, Korea
E-mail:
초록
가수분해시킨 폐 유리를 사용하여 발포유리블록의 제조시 발포유리블록의 안정화를 위한 열처리 공정을 조사하였으며 이를 바탕으로 상업적 생산을 위한 scale-up 실험을 시도하였다. 최적의 열처리 조건은 발포소성 후 550~600 ℃로 급냉시켜 안정화시키고 이후 200 ℃에서 추가적으로 열응력을 해소하고 0.3 ℃/min의 속도로 실온까지 냉각시키는 것이다. 이러한 열처리 조건을 거침으로서 기계적으로 안정성을 지닌 250 mm×250 nm×90 nm 크기의 발포유리가 생산 가능하였으며 이 경우 발포유리블록의 물성은 밀도 0.28±0.06 g/cm3, 열전도도 0.048±0.005 kcal/hm℃, 흡수율 0.5±0.09 vol%, 선팽창계수(8.6±0.2)×10-6 m/m℃(400 ℃ 기준), 휨강도 15.0±0.6 kg/cm2, 압축강도 39.5±0.6 kg/cm2의 특성을 갖는 것으로 확인되었다.
Heat treatment condition for the stabilization of foamed glass block through the foaming process of the hydrolized waste glass was investigated and scale-up test for the manufacturing of foamed glass was also attempted for the actual foaming process. Proper heat treatment condition was quenching from the foaming temperature to 550~600 ℃ for stabilization, and then annealing from stabilization temperature to 200 ℃ and holding up at 200 ℃ for removal thermal stree, and then annealing to the room temperature with cooling speed of 0.3 ℃/min. Through this heat treatment conditions, foamed glass block with size of 250 mm×250 mm×90 mm was produced successfully. The properties of this foamed glass block showed density of 0.28±0.06 g/cm3, thermal conductivity of 0.048±0.005 kcal/hm ℃, moisture absorption of 0.5±0.09 vol%, linear expansion coefficient of (8.6±0.2)×10-6 m/m℃(400 ℃), flexural strength of 15.0±0.6 kg/cm2, and compression strength of 39.5±0.6 kg/cm2.
Keywords:foamed glass;stabilization;insulation materials
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